2004 Chevrolet TrailBlazer Logo
Posted on Oct 13, 2010
Answered by a Fixya Expert

Trustworthy Expert Solutions

At Fixya.com, our trusted experts are meticulously vetted and possess extensive experience in their respective fields. Backed by a community of knowledgeable professionals, our platform ensures that the solutions provided are thoroughly researched and validated.

View Our Top Experts

2004 trailblazer. Low beam headlights go out while driving at night for no apparent reason. Saw other posts like this on other sites. How do I fix it and are they doing a recall for this? Thanks

1 Answer

Duane Wong

Level 3:

An expert who has achieved level 3 by getting 1000 points

Superstar:

An expert that got 20 achievements.

All-Star:

An expert that got 10 achievements.

MVP:

An expert that got 5 achievements.

  • Chevrolet Master 6,826 Answers
  • Posted on Oct 13, 2010
Duane Wong
Chevrolet Master
Level 3:

An expert who has achieved level 3 by getting 1000 points

Superstar:

An expert that got 20 achievements.

All-Star:

An expert that got 10 achievements.

MVP:

An expert that got 5 achievements.

Joined: Jun 20, 2010
Answers
6826
Questions
6
Helped
2862274
Points
20234

I read over the recalls and they do have recalls on brake and turn signal lights but not the low beam headlights while driving at night.

Sounds like the relay or headlamp driver module relay 46, for the headlights is going bad, though.
Or, it could alternatively be bad grounding of wire somewhere or bad wiring in general.

I would check in the underhood fuse box for the relay and see if wiggling it to ensure a good connection helps matters.


Underhood Fuse Block 4.2L Engine Except Saab Underhood Fuse Block (2002 - 2005 Early Production) 2004 trailblazer. Low beam headlights - gm-06-42-1628.gif

Underhood Fuse Block (2005 Late Production - 2007) gm-06-42-1629.gif

Saab Underhood Fuse Block (2005) gm-06-42-1630.gif

Underhood Fuse Block (2005 - 2007) gm-06-42-1631.gif

5.3L Engine Except Saab Underhood Fuse Block (2003 - 2005 E2004 trailblazer. Low beam headlights - gm-06-53-1632.gif gm-06-53-1632.gif
gm-2004 trailblazer. Low beam headlights - gm-06-53-1634.giflass=

Underhood Fuse Block (2006 - 2007) gm-06-53-1634.gifgm-06-53-1635.gif

prev.gif next.gif

Add Your Answer

×

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

0helpful
2answers

2004 trailblazer headlights are not working in dim but bright lights work

Low beams don't work ??????? But high beams do ????? DRL - daytime running lamps ?

HDM relay # 46 low beam relay , under hood fuse box.
1helpful
1answer

Headlights no longer come on

You probably have two separate problems. If both your low beam headlights were going on and off, the most likely reason is the low beam headlight relay located in the underhood fuse panel. It is designated as #46. Try switching it with #45 relay, right next to it, for troubleshooting purposes.
For the fog light check relay #39
0helpful
1answer

Low Beam headlights won't come on at night, but

Most likely Relay #46 in the underhood fuse panel is bad, try swapping it with #45 to isolate problem.
1helpful
1answer

My 2004 Vibe suddenly lost the low beams - I have running lights, fog lights and high beams. Both went at the same time for no apparent reason - I've had the control on the steering wheel in every...

The DRL Module controls the operation of the DRL's and the automatic headlights. A faulty DRL Module is the most common cause of low beam failure. The DRL Module is located under the dash, just above the brake pedal.
2helpful
2answers

Low Beam headlights not working

The daytime running lights run the high beam bulbs at low voltage so it sounds like you need to put the relays back where they were and either replace the low beam bulbs or repair the wiring to them.Also the relay you removed could be defective.
0helpful
2answers

Driving down highway last night and lowbeams turned off. High beams worked, couple of miles later, low beams came back on.

You may want to check the terminals at the back of the headlight. Normally this is caused by loose connections. Other than that check the rest of the wiring and the relay.
0helpful
1answer

2004 Chevrolet Trailblazer

First face the vehicle so the battery in on the right.
Second open hood.
Third Remove the Grill by pushing firmly on two retainer clips that are on the top, use the wide slot screwdriver to get the rest of the clips off. Pull up gently on the grill it should then pop out. The grill extends under each headlight assemblymag-glass_10x10.gif any other retainer clips should release when the grill in popped out.
  • Step 2 Fourth on top of the headlight assembly you will see one 1" tab on the right and left side, pull the tabs upward about two inches and this should release the headlight assembly. You then should be able to pull the headlight assembly out toward you.
  • Step 3 Finally at the back of the headlight assembly you will see two rubber caps one for low beam and one for high beam, the white base is for the low beam and the black base is for the high beam. Unsnap the wire harness from the bulb base, turn the bulb clockwise.

    Replace the bulbs high beam on the outside and low beam on the inside.
  • 16helpful
    2answers

    Low beam headlights

    Try swapping #45 cooling fan relay and #46 HDM (headlight driver module) relay in the underhood fuse block. These are solid state modules and are not like conventional relays.
    Not finding what you are looking for?

    1,845 views

    Ask a Question

    Usually answered in minutes!

    Top Chevrolet Experts

    ZJ Limited
    ZJ Limited

    Level 3 Expert

    17989 Answers

    john h

    Level 3 Expert

    29494 Answers

    Thomas Perkins
    Thomas Perkins

    Level 3 Expert

    15088 Answers

    Are you a Chevrolet Expert? Answer questions, earn points and help others

    Answer questions

    Manuals & User Guides

    Loading...